Bearing for type-writer actions.



F. A. CRITZ, In.

BEARING FOR TYPE WRITER ACTIONS APPLXCATION FILED MAYBI, 1917.

mama Ja1.29,1918..

FRANK A. CRITZ, in, or wnsr roim', mssissrrri.

BEARING FOR TYPE-WRITER ACTIONS.

Specification of: Letters Pattfillt.

Patented Jan. 29, i913.

Application filed May 31, 1917. Serial No. 171,934.

To all whom it may concern:

Be it known that I, FRANK, A. Cnrrz, Jr., a citizen of the United States, residing at West Point, in the county of Clay and State of Mississippi, have invented certain new and useful Improvements in. Bearings for Type Writer Actions, of which the following is a specification.

This invention relates to a pivot bearing for typewriter bars, both key levers and type bars, but especially the latter; It is specially adapted for that type of machine known as visible writers. But I do not desire to be limited to any particular form or make of machte, or in fact to limit the use of the bearing to typewriters alone.

The invention consists in forming two or more notches in the bars said notches being at an angle to each other or reversed with respect to each other, so that the walls of one notch would form a line co-e'xtensive with the wall of an adjacent notch, and in a plane parallel thereto. Into these notches extend cooperating parts which support or engage' the bars, and by this arrangement I avoid all unnecessary friction.

In the accompanying drawings:

Figure 1 is a side elevation showing th I invention applied to type and key bars, with the connection between them.

Fig, 2 is a section on the line 22 of Fig. 1.

Fig. 3 is a section on the line 33 of Fig. 1.

Fig. 4 is a section on the line 44 of Fig. 1; I

Fig; 5 is a section on the line 55 of Fig. 1.

In these drawings -1 designates a part of the typewriter frame, 2 the key lever and 3 a part of the type bar. Stationary supporting bars 4, 5 and 6 are cominon to. machines of thischaracter. 7, 8, 9,10, and 11 are metal plates or strips which I secure to said bars and from which extend integral fingers to be described hereafter. At its rear endthe key lever is provided o'nits sides with plates 12 notched as at 13. Prongs or fingers 14: of a plate 15 extend into these notches.

A spring 16 supports the lever and a rod 1.? stops or limits its downward movement.

It is of course understood that each key lever and each type bar is provided with the bearings shown, but as they are duplicates,. only a gled inwardly? one key lever and one type bar is shownand described.-

The key lever is also provided with side plates 18 which are notched on their under edges as at 19 and a V-notch 20 is formed in the upper surface of the lever. The walls of the notches 19 will form a straight line with'the Walls of the notch 20.,-or if a pin was passed transversely through the bar at the apex of the notch 20 it would also touch the apices of the notches 19. An IL-shaped member 21 forms part of the connecting meansbetween the lever and bar 2 and 3. This member is connected by a pivoted link 22 with the inner end of the type bar. At its lower end the member 21 carries side plates 23 and the lower edge of the member is notched as at 24 which notch is engaged by a prong or finger 25 extending from the plate 10. The plates 23 are notched on their'upper edges as at 26 and are engaged by prongs 27 struck from the plate or strip 11. These are the bearings on which the member 21 rocks at its heel. the prongs 27 forming'practically a straight line with the finger 25, the notches coming to a common line, exactly as in the case of the notches 19 and 20..

The foot portion-of the member 21 has the same form of bearing comprising the side plates 28 notched at 29 with the notch 30 formed on the underside of the foot.

A rectangular link 31 forms the connection between the lever 2 and the member 21. This link has inwardly extending flanges 32 which form triangular shaped fingers that engage the notches 29 of the member 21, and similar lower flanges 33 which engage the notches 19 of the plates 18, which plates of course are considered as a part of the lever 2. A plate 34 has tapering ends that seat in the notches 20 and 30 and hold the lever'2 and the member 21 properly spaced.

.Adjaoent the rear end of the bar 3 are side plates 35 with cover plates 35 The lates 35 and 35 respectively are notched at 3 and 36 and the underside of the bar at 38, all notches extending inwardly to a common line their apices being in alinement. A finger 39 from the strip 5 extends into the bar notch 38. Prongs 40 from the plate 8 engage the notches 3 6 and the notches 37 are engaged by prongs41 from the strip 7 As shown in Fig. 2 these rongls have their ends so t, at to prongs proper clear the sides of the plate'or bar. The only point of frictional Contact, in these hearings is at the apices of the notches and this is reduced to a minimum.

The notches in the bar 3 and its plates are of a Wider angle than those in the member 21 and lever 2 owing to the greater movement of the type bar which Swings through an arc of about ninety degrees.

It is thought that rom the above description and the drawings the operation, construction and advantages of the bar bearings employed will be fully understood by those skilled in the manufacture or use of such devices. I

The type of bearing shown may be employed for other machines than typewriters if desired.

at I claim is l A bearing of the kind described comprising a supported member having a V- notch cut therein. side plates carried by said member and having notches at an angle to the notch of the supported member, the

apices of said notches contacting, and cooperating members engaging said notches respectively.

2. A hearing of the kind described coming said notches, the notches extending to- Ward a common point,

- 4. A bearing for typewriter bars provided with notches at an angl to each other, and having their apices in alinemcnt, and engaging and supporting means resting loosely in said notches.

5. A pivoted support for typewriter bars comprising a bar notched on its under face,

side plates carried by the bar and notched respectively on their upper edges and at their ends, all of said notches converging toward a common line, and supporting fingers,

engaging respectively said notches and rest- 1ng loosely therein.

In testimony whereof I afiix my signature.

FRANK A. CRITZ, JR. 

